Suction cup placement



0. W. HUETER SUCTION CUP PLACEMENT March 28, 1950 Filed Aug. 11, 1948 Z/ Zd w w m w Patented Mar. 2 8, 1950 UNITED STATES OFFICE 5 v v 2501,9142 SUCTION our RLACEMENT Otto W. Huctet, Toledo, Ohio Application August 11, 1948, serial Nix 43,725

This invention relates to special developments for accurate placement of objects in anchorage to a smooth surface, independently of detracting from the finish of such surface.

This invention has utility when incorporated s for such time intervals as to promote acceptable wide ranges for use.

Referring to the drawings:

Fig. 1 is a side elevation, partly broken away, and upon a considerably enlarged scale of an embodiment having 1% diameter as normal or in non-anchoring condition;

Fig. 2 is a fragment, in section, of the suction cup rim (Fig. 1) in conforming to fiat surface placement therefor;

Fig. 3 is an on-edge view looking side-wise or toward the cup bottom as its 2; oz. weight folds back the readily yieldable lip edge in the range of 30;

Fig. 4 is a section on the line IV-IV, Fig. 3, showing the soft cup lip rim readily lying flat on the support therefor;

Fig. 5 is a plan view of an embodiment of a plurality of the suction cups of Fig. 1 in a fender, rack or guard; and

Fig. 6 is a fragmentary view showing the cup anchorage or mounting in the plastic guard.

In solid, mottled or wide range of selected colors, as opaque or translucent to transparent, a plastic unit bar portion or slat I is provided with downwardly open enlargements or lugs 2 with angularly deflected end wings 3 therefrom. Openings 4 in the lugs 2 are internally threaded to be engaged by stems 5 as externally threaded and extending from round heads 6.

A fiat base 7 of the lugs 2 is engaged by a flat seat 8 of a cylindrical body portion 9. Molded or formed in the plastic body 9 and centrally to protrude therefrom as to the stem 5 is the screw 5, 6, with a thin portion I8 of the body concealing the tip of the rounded head I5 from the, bottom A ameter of the body 9.

Approximately in a plane of fiat side I I of the 1 Claim. (Cl. 248362) k screwhead 6 is junction line -I:5'be'tween the body 9 and :outwardly and inclined or straight 'tap'et face 16, hereinlshown I as approximately 48 :away from "a perpendicular H to :a plane of .a cupmini er -edge 'latadapted peripherally to contact adiat face -I 9,-'or even+conform to a more or less "smooth concave or convex face.

"The :cup wall portion eIZ has :a corner 2|! Efrem which a flare conical straight face :21 extends to the cup lip or edge I8. As away from the fiat face I9 or the plane for the edge I8 as in normal or idle position, the angle for the face 2| is in the range of 22. This leaves the spread between the faces I6, 2|, as about 20 in the diverging of the straight face cone portions from a soft edge I8.

In the practice hereunder, the suction cup body or integral unit as mold-anchored with the screw 5,6, is of rubber or like elastic material, readily distorted as away from the body 9, but sensitive to return to initial normal shape. Considering the diameter of the suction cup unit as 1%, and the screw 1% diameter by 4;" long, the total mass is about oz. Resting on an edge of the lip I8, it has a flattened out portion 22 (Figs. 3, 4) as much as 30 in its peripheral extent. When the cup be dry and dropping of its own weight as little as 3" to land fiat on the rim edge I8, there is an anchoring of as much as over 1#. A pressure of around 3# on the stem 5 flattens the entire face 2| for overall slightly increased diameter.

The unit performs as a sensitive check valve. The outer face I6 of the cup flare is a more steep cone section having a common axis with the face 2 I. These cones are considered as nested for face intersection at the edge I8, thus defined as in a plane perpendicular to the common axis of the two cones as central of the stem 5.

The straight faces I6, 2 I, from the edge I8, provide a resilient or yieldable rubber-like body normally tending to hold initial shape, but pressureresponsive to deformation. However, as the distortion action be relieved, there is immediate return to initial normal configuration. The converging of the faces I6, 2|, is in a straight taper to the endless rim I8. This convergence, in the softness of the edge I8 has it of feather-like characteristic in adapting it for ready snug seating at the region, plane or face with which the cup is to effect placement for the object to be held, as "the guard I, 2, 3. It is thus seen that the face I6 fares out to knife-edge like margin or rim edge I8 with the face 2 I. The volume or capacity volume of the undeformed flare. The thin region 10 at the screw head is a positive bonding against disturbance. The flattening of the side 2| (Fig. 2), while increasing the periphery, actually to an extent reduces the spacing between the edge 18 and the corner 20. This is interpreted to mean that the body toward the face l6 undergoes slightly less radial extension or stretch, as somewhat localized for source as from the region of the corner I5 and screw top face M. Upon pressseating or anchoring of the cup-unit, air volume from the flare is expelled at the rim l8. This rim is so thin at its face [6, that the face 2| has insured snug fit, dispersed over the area therefromto the cup l3 in such a predominant degree as to stabilize this distortion of the tension force factor in the region of the face 21 as opposed to the but slightly diverging compression force in the region of the face l6, especially from rim moistening. The predominant degree as herein disclosed, taking the slant radial width of the face 2| between the corners I8, 20, as approximately twice the radius of the cup region I3, approaches between seven and eight times in area for the maxi- ,mum contact as fully effective between the corners I8, 20, than the area inward from the corner 20.

'- What is claimed and it is desired to secure by Letters Patent is: I v

shoulder in cup holding A suction cup of elastic material body having a re-entrant cup-mounting side with a central relatively shallow cup region bounded by an annular shoulder, said body having two outward conical taper faces meeting at a feather edge rim concentric with and spaced outwardly from the annular shoulder, there being an angle between said faces not more than in the range of twenty degrees, with the angle between the inner face and the plane of the feather edge at the out-of-use position for the cup being not more than in the range of twenty-two degrees, whereby there is established sufilcient between-conical-faces thinness in the elastic material body for the feather edge to approach co-planar relation as to said position.

OTTO W. HUETER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,799,445 Stansberry Apr. 7, 1931 1,877,570 FitzGerald Sept. 13, 1932 1,902,322 David Mar. 21, 1933 2,314,803 Wagner et al Mar. 23, 1943 2,432,719 Braun Dec. 16, 1947 

